Natural Selection

Drift and gene flow depends on context drift

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Unformatted text preview: py or linkage ⇒ ⇒ what would happen if pairs of evolutionary processes would occur simultaneously? ⇒ Which would win? Drift and Gene Flow: depends on context Drift eventually leads to fixation or loss ⇒ Depends on how much sampling error ⇒ Population size ⇒ If population size is small, stronger effect ⇒ Gene flow: mixes alleles and potentially genotypes among populations ⇒ We can see migration events ⇒ If there is multiple migration events, more mixing of alleles Natural Selection- genetic drift Natural Selection’s effects is determined by relative fitness ⇒ Headed into one direction ⇒ ⇒ Mutation: determined by rate of mutation ⇒ Also population size ⇒ ⇒ Non- random mating ⇒ Positive assortive mating: mating with like individuals ⇒ Negative assortive mating: mating with unlike individuals ⇒ Identity by descent ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ tree topology: arrangement of trees interior nodes can be thought as swivels, can flip them back and forth branch lengths can vary, will have a scale to show rooted vs. unrooted trees polarity: shows that certain groups have a certain hierarchy outgroup permits ancestral and derived character states taxonomy: naming...
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This note was uploaded on 02/06/2014 for the course BIO 104 taught by Professor Matthewhamilton during the Spring '11 term at Georgetown.

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